Perpetual calendar



(No Model.)

W. D. EOMAINE. PERPETUAL CALENDAR.

Patented Mar. 25, 1890.

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UNITED STATES ATENT FFIClE.

IVORTHINGTON D. ROMAINE, OF CINCINNATI, OHIO.

PERPETUAL CALENDAR.

SPECIFICATION forming part of Letters Patent No. 424,356, dated March25, 1890.

Application filed Tannery '7, 1890. Serial No. 336,156. (No modelJ Toall whom it may concern.

Be it known that I, IVORTHINGTON D. R0- MAINE, a. citizen of the UnitedStates, residing at Cincinnati, in the county of Hamilton and State ofOhio, haveinvented certain new and useful Improvements in PerpetualCalendars;andI do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theartto which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the figures of reference markedthereon, which form a part of this specification.

This invention relates to calendars arranged after the perpetualplanthat is, having been used for the first year they may be used again,and so on indefinitely until they become worn out. It is my intention tocombine them either with an inkstand or with an easel, in order toafford in the latter case some suitable space for the display ofadvertising matter.

The specific construction and arrangement are illustrated in theaccompanying drawings, in which- Figure 1 shows in a perspective Viewthe calendar combined with an inkstand. Fig. 2 shows it in a similarview combined with an easel. Figs. 3, 4, 5, and 6 show cards having thedate for every day of the month on them.

9 is an inkstand having two standards 10 10 connected to it. Betweenthem and supported by them are two pockets 11 and 12, with open fronts.The upper pocket 11 contains twelve tablets bearing the names of themonths. The lower pocket 12 receives the tablets having the dates forthe days on them. One of the difficulties in calendars of this kind isto provide for the variations and changes taking place every yearbetween the week days and the date and also the change caused by theleap-years. Thus, for instance, while in a given year the first ofJanuary might fall upon a Sunday, it will very likely change thefollowing year to a different day. To overcome this disturbing element,I provide seven tablets arranged so thatin each one the month startsfrom a different day. (See Figs. and

4:.) There being months of thirty-one and thirty days, it is desirableto have seven tab lets thus arranged for each month. (See Figs.

3 and 4.) In the same manner I provide for February having onlytwenty-eight and 011 leap-years twenty-nine days. (See Figs. 5 and 6.)

The tablets having only thirty, twentyeight, and twenty-nine days onthem, Figs. 4, 5, and 0, could be omitted, or at least the last one,with twenty-nine, or the last two, with twenty-nine and twenty-eightdays, in which case the thirty-one or thirty day tablets would simplybechanged at the end of the month proper and not at the end of the numberof days they are capable of indicating. Thus, for instance, on atwenty-eight or thirty day month the thirty-0n e-day tablet would simplybe taken out after having served to show the date for the twenty-eightor thirty days, and another tablet having the first of the monthstarting from the proper week-day is substituted.

Cardboard is the best material for those tablets; but celluloid or othersuitable material may be used.

VVhen more than one set of tablets are used, they may be printed on bothsides of the material. The same may be done with the tablets having thenames of the months on them.

In Fig. 1 the tablets are inserted into their pockets from the top. InFig. 2, the calendar being in the general shape of an easel, they areinserted sidewise. The spaces 13 and 14; on the front of this easelabove and below the calendar may be utilized for advertising purposes.

The names (or their abbreviations) of the days might go with eachtablet; but the better practice would be to print them onto the top ofthe pocket at 15 in Fig. 1, or above the opening in the front of theeasel at 16 in Fig. 2, in such position as to correspond with the sevencolumns of the tablets after they are inserted.

One of the peculiar features of this system is, in addition to themanner of printing the face of the tablets, the separation from them ofthe names of the months, and,although not absolutely necessary, theseparation from them of the names of the week-days. The separation firstmentioned, however, is needed; otherwise the limited number of tabletswould not be sufficient, but would have to be increased twelve times foreach group. The

principal advantage consequent upon this novel and peculiar arrangementis the fact that it needs adjusting not more than once a month, an dwhen the twenty-eight tablets are used their sequency may be arrangedonce for the whole year.

I do not confine myself to the modes shown for confining the tablets.They might be strung on rings and suspended or detained in any othersuitable way to conform to the purpose-as, for instance, they might beprinted all 011 one strip and operated by means of one or two rollers. r

I-Iaving explained iny invention, I claim as new- 1. In a perpetualcalendar, the novel manner of indicating the dates during the wholemonth on one tablet, adjusted once at the first of the month,andhavingaseries of them arranged so as to have one for every weekday tobegin the month from, as fully shown and described.

2. I11 a perpetual calendar, the novel manner of indicating the datesduring the whole month on one tablet, adjusted once at the first of themonth, and havinga series of them arranged so as to have one for everyweekday to start the month from, in combination with separate tabletsseparately adjusted and having the names of the months on them, all asfully shown and described.

3. In a perpetual calendar, the novel manner of indicating the datesduring the whole month on one tablet, adjusted once at the first of themonth, and having a series of them arranged so as to have one for everyweekday to start the month from, in combination with separate tabletsseparately adjusted and having the names of the months onthem and asuitable frame or structure within which all these tablets are confined,all as fully shown and explained.

In testimony whereof I affiX my signature in presence of two Witnesses.

IVOR'THINGTON D. ROMAINE.

Witnesses:

RANKIN D. JONES, CARL SPENGEL.

